LB7 Duramax Coolant Reservoir 2001-2007 - New Direct-Fit Diesel Replacement

Overview

This is a direct-fit coolant reservoir for the LB7 Duramax diesel (2001-2007). It is a quality new, direct-fit replacement built to OEM-equivalent specification for a professional-grade repair that restores proper function and reliability to your truck.

What It Does & How It Helps

The coolant reservoir (degas/overflow tank) manages coolant expansion and air separation. A cracked tank leaks and lets air into the system, causing overheating. A fresh reservoir restores a sealed, properly-bled cooling system.

Fitment

Confirm your engine and model year before ordering. Not sure it fits? Email sales@coredieselparts.com with your VIN or engine and year and we will confirm the correct unit.

Ordering & Shipping

This part is made to order and typically ships within 2–5 business days. Orders ship fast with tracking. Questions about fitment or your order? Email sales@coredieselparts.com and we are happy to help.